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Click on image for the lowdown. 
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| | | Forums66 Topics128,077 Posts1,055,932 Members48,430 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Nov 2009 Posts: 639 'Bolter | | 'Bolter Joined: Nov 2009 Posts: 639 | When stock manifolds were modified for dual exhaust, it was common to put a block-off plate inside the manifold to partialy or completely seperate the exhaust into the seperate pipes. If this was done to your manifold you will have to remove the manifold to remove the block-off plate. | | |
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